PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-09:27:50
G01     111.4          23.0                6.0 +/-    1.07      12.3 +/-    1.07  0.030 / 0.040
G07     100.3          59.8                6.1 +/-    0.73       6.9 +/-    0.73  0.030 / 0.030
G08     42.3           22.7                2.9 +/-    1.22       5.9 +/-    1.22  0.040 / 0.050
G09     174.8          16.9                6.8 +/-    1.53      16.1 +/-    1.53  0.030 / 0.050
G11     94.0           41.0                6.3 +/-    0.73       9.0 +/-    0.73  0.070 / 0.190
G13     314.1          23.9                3.3 +/-    3.62       6.6 +/-    3.62  0.120 / 0.190
G17     203.5          35.4                6.9 +/-    2.16      10.8 +/-    2.16  0.080 / 0.110
G28     309.8          60.1                4.5 +/-    0.56       5.1 +/-    0.56  0.070 / 0.110
G30     3.6            74.5                5.5 +/-    1.17       5.7 +/-    1.17  0.080 / 0.100